Delta Airlines ATL Terminal operates primarily out of Terminal South (Terminal S) at Hartsfield-Jackson Atlanta International Airport (ATL), which serves as its main hub. Terminal South is part of ATL’s Domestic Terminal complex, a bustling area that handles the majority of Delta’s domestic flights. The terminal is connected to multiple concourses—T, A, B, C, and D—all of which accommodate Delta flights and offer passengers easy access to different gates via the airport’s underground Plane Train.